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#include "stationquery.h"

#include <QtCore/QStringList>
#include <QtXmlPatterns/QXmlQuery>

StationInformation::StationInformation()
{
}

StationInformation::StationInformation(const QString &id, const QString &name)
    : m_id(id), m_name(name)
{
}

QString StationInformation::id() const
{
    return m_id;
}

QString StationInformation::name() const
{
    return m_name;
}

//! [0]
StationInformation::List StationQuery::query(const QString &name)
{
    const QString stationIdQueryUrl = QString("doc(concat('http://wap.trafikanten.no/FromLink1.asp?fra=', $station))/wml/card/p/small/a[@title='Velg']/substring(@href,18)");
    const QString stationNameQueryUrl = QString("doc(concat('http://wap.trafikanten.no/FromLink1.asp?fra=', $station))/wml/card/p/small/a[@title='Velg']/string()");

    QStringList stationIds;
    QStringList stationNames;

    QXmlQuery query;

    query.bindVariable("station", QVariant(QString::fromLatin1(QUrl::toPercentEncoding(name))));
    query.setQuery(stationIdQueryUrl);
    query.evaluateTo(&stationIds);

    query.bindVariable("station", QVariant(QString::fromLatin1(QUrl::toPercentEncoding(name))));
    query.setQuery(stationNameQueryUrl);
    query.evaluateTo(&stationNames);

    if (stationIds.count() != stationNames.count()) // something went wrong...
        return StationInformation::List();

    StationInformation::List information;
    for (int i = 0; i < stationIds.count(); ++i)
        information.append(StationInformation(stationIds.at(i), stationNames.at(i)));

    return information;
}
//! [0]